The Collaborative International Dictionary of English v.0.48:
Babble \Bab"ble\ (b[a^]b"b'l), v. i. [imp. & p. p. Babbled
(b[a^]b"b'ld); p. pr. & vb. n. Babbling.] [Cf. LG. babbeln,
D. babbelen, G. bappeln, bappern, F. babiller, It. babbolare;
prob. orig., to keep saying ba, imitative of a child learning
1. To utter words indistinctly or unintelligibly; to utter
inarticulate sounds; as a child babbles.
2. To talk incoherently; to utter unmeaning words.
3. To talk much; to chatter; to prate.
4. To make a continuous murmuring noise, as shallow water
running over stones.
In every babbling brook he finds a friend.
Note: Hounds are said to babble, or to be babbling, when they
are too noisy after having found a good scent.
Syn: To prate; prattle; chatter; gossip.